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3 years ago

Ahmad had 7/8 acres of land. He planted 3/4 of this land with corn. How many acres did he plant with corn?

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

4 0

Answer:

Step-by-step explanation:

Here u r

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Suppose that poaching reduces the population of an endangered animal by

Sedbober [7]

Answer:

38.26 years.

Step-by-step explanation:

We have been given that the population of an endangered animal by reduces 8% per year. the current population of the animal is 1700. When the population of this animal falls below 70, its extinction is inevitable.

Let us write the model for population of this animal (y) after x years.

Since we know that an exponential decay function is in form: $y=a*(1-r)^x$ , where,

a= Initial value.

r = Rate in decimal form.

Let us convert our given rate in decimal form.

$8\%=\frac{8}{100}=0.08$

Upon substituting a= 1700 and r = 0.08 in exponential function, we will get the model of animal population as:

$y=1700*(1-0.08)^x$

$y=1700*(0.92)^x$

Let us find, when the animal population will face extinction by substituting y=70 in our function.

$70=1700*(0.92)^x$

$\frac{70}{1700}=\frac{1700*(0.92)^x}{1700}$

$0.0411764705882353=0.92^x$

Let us take natural log of both sides of our equation.

$ln(0.0411764705882353)=ln(0.92^x)$

$ln(0.0411764705882353)=x*ln(0.92)$

$-3.1898882879949483163=x*-0.0833816089390511$

$x=\frac{-3.1898882879949483163}{-0.0833816089390511}$

$x=38.2564971890460849445284\approx 38.26$

Therefore, the population of the animal will face extinction after 38.26 years.

5 0

4 years ago

Solving Quadratic Functions

muminat

The answer will be none

6 0

3 years ago

What’s the constant?

anyanavicka [17]

8 would be the constant but in this situation there is a variable next to it so I’m not sure if it would be considered a constant

6 0

3 years ago

Read 2 more answers

Can someone help me with this its for biology but it’s a math question.

alexdok [17]

Answer:

Hey there!

A pie graph is best used for looking at the percentages in each category.

Let me know if this helps :)

6 0

3 years ago

Read 2 more answers

-4x+5 + -13x+39=180 angle measure

mylen [45]

Step-by-step explanation:

−4x+5−13x+39=180

Step 1: Simplify both sides of the equation.

−4x+5−13x+39=180

−4x+5+−13x+39=180

(−4x+−13x)+(5+39)=180(Combine Like Terms)

−17x+44=180

Step 2: Subtract 44 from both sides.

−17x+44−44=180−44

−17x=136

Step 3: Divide both sides by -17.−17x

−17

136

−17

x=−8

Answer:

x=−8

5 0

3 years ago